diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 8de009e..513aca0 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.20
+        go-version: ^1.21
       id: go
 
     - name: Check out code into the Go module directory
diff --git a/go.mod b/go.mod
index 93cbdae..cb3b806 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@
 
 module github.com/symbolicsoft/kyber-k2so
 
-go 1.20
+go 1.21
 
 require golang.org/x/crypto v0.16.0